day 12 p2 still got me stumped

2023/day12/main.py

@@ -1,11 +1,11 @@
 import re
 
-with open('input.text', 'r') as file:
+with open('test.text', 'r') as file:
     data: list[str] = file.readlines()
 
 # Parse Input
 
-
+seen = {}
 records = []
 groups = []
 for line in data:
@@ -33,11 +33,16 @@ def valid_group(record: str, groups: list[int]) -> bool:
     return True
 
 def check_combinations(record: str, group: list[int]) -> int:
+    if record in seen:
+        return seen[record]
+
     if '?' in record:
         new_record1 = record.replace('?', '.', 1)
         new_record2 = record.replace('?', '#', 1)
 
-        return check_combinations(new_record1, group) + check_combinations(new_record2, group)
+        ans = check_combinations(new_record1, group) + check_combinations(new_record2, group)
+        seen[record] = ans
+        return ans
     else:
         return int(valid_group(record, group))
 
@@ -47,4 +52,16 @@ for record, group in zip(records, groups):
 
 print(total)
 
+# Part 2
+total = 0
+for record, group in zip(records, groups):
+    record = ((record + '?')* 5)[:-1]
+    group = group * 5
+
+    total += check_combinations(record, group)
+
+print(f'Part 2: {total}')
+
+
+